Had a problem with yellow and with orange Clover chalk. Will never take a chance on either of them again. I will use frixion pens, so who cares if comes back, put in the dryer. I will also use white pounce powder with stencils, I don't use the pounce holder though, I use a cheapy small foam brush and dip into the chalk and lightly brush over the stencil. Brushes off nicely.